• Aceticon@lemmy.dbzer0.com
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    19 days ago

    That’s not part of HID, it’s a second, usually custom (though it can also be a different USB standard that allows for uploading data to the device, such as USB-DFD), USB endpoint on the device.

    In the USB-HID spec the only data that you can send from Host to Device is indicator status (used for example to determine which keyboard LEDs are ON)